Braun



(No Mode l.) I

H. DECK.

5 FILTER. No. 550,597. Patented Dec. 3, 1895.

FIG].

ANDREW RENMMM. "HDTOIJI'HQWASKINGTON. I) E 7 To aZZ whom it may concern:

UNITED. STATES PATENT OFFICE.

HENRY DECK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN BRAUN,IVILLIAM P. M. BRAUN, AND JOHN F. BRAUN, OF SAME PLACE.

FILTER.

SPECIFICATION forming part of Letters Iatent No. 550,597, dated December3, 1895.

Application filed August 1, 1894.

Be it known that I, HENRY DECK, of the city and county of Philadelphiaand State of Pennsylvania, have invented an Improvement in Filters, ofwhich the following is a specification.

My invention relates to filters; and it consists of certain improvementswhich are f ully' set forth in the following specification and are shownin the accompanying drawings.

More particularly my invention relates to that class of filters in whichthe filtering material is tightly packed within the filteringcompartmentby means of an adjustable diaphragm, plate, or piece, and part of myimprovements relate to the means for adjusting such diaphragm or plateto compress the filtrant.

My invention also embraces improvements in the devices employed fordistributing the water more evenly within the body of compressed ortightly-packed filtering material, so that a more perfect filteringeffect may be produced. I

It is also an object of my invention to embody my improvements in asmall filter adapted for application to an ordinary tap or faucot, andto simplify the construction and reduce the liability of the parts tobecome out of order or defective.

In the drawings, Figure 1 is a vertical sectional view of a filterembodying my invention and Fig. 2 is a horizontal sectional view of thesame on the line a; as of Fig 1.

A is the tubular body or case of the filter.

B is the top or cap adapted to be secured to the body A, as by thescrew-threads a. The top or cap B has a base or bottom 0, provided withan opening D, preferably formed with a tubular projection E, so thatwhen the cap is applied to the case A access thereto is closed fromabove, except through the opening D. The upper portion of the cap B isextended upward and adapted to receive the supply of water. I have shownthe cap formed with a more or less contracted neck F,over which isplaced an open conical socketpiece G, of rubber, leather, or othersuitable material, adapted to hold the filter upon the tap or faucet byfrictional contact.

II is a clampingmut screwed upon the neck filtering material I.

fierial No. 519,174. (No model.)

F and clamping the socket piece G in place.

Thile this, construction for attaching the filter to the tap or faucetis preferred, other forms maybe used,if desired.

Within the body or case A is placed the Any suitable filtering materialmay be employed, but it should be of such charactera that it may betightly compacted Within the case. I prefer to use a filtrant of fibrousmaterial, such as cottonpulp.

this an adjustable perforated clampingplate located within the case Aand forming the bottom of the filtering-compartment K. The plate J isadapted to be pressed upon the body of filtering material to pack thefiltrant tightly within the chamber K.

L is the bottom of the filter, provided with threads Z by which it issecured to the threaded body A. The bottom L has an outlet M, and isprovided with an internal boss or projection N, adapted to bear upon theplate J, so that by screwing up the bottom L upon the case A the plate Jmay be pressed upon the filtrant I with a greater or less pressure.

In the drawings I have shown the boss N, formed about the orifice M, andprovided with a series of lateral apertures n for the passage of thewater. This is my preferred construction. The plate J may be providedwith a bearing j for the boss N.

WVith a filter of this character, in which the filtrant is tightlypacked within the filteringchamber, I prefer toemploy means fordistributing the water through the body of the filtrant, in order that amore perfect filtration maybe obtained. For this purpose I employ thepolygonal piece 0, which is inserted in the tubular piece E, andprojects down into the body of the filtering material. The water whichenters the orifice D will pass through the spaces at between the tubularorifice D or projection E and the non-circular or polygonal piece 0 andwill travel down the surface of the piece 0 into the body of thefiltrant I. To carry the water away from the piece 0 and distribute itthrough the filtrant, I employ a series of projections P, carried by thepiece 0, and extending out in different directions. These projectionspreferably consist of wires and may be attached to the piece 0 with theends projecting. The wa ter as it passes down on the surface of thepiece 0 is carried out upon the Wires P, and thus becomes distributed indifferent directions throughout the filter.

Instead of a non-circular or polygonal piece 0 and a circular apertureor tube E in which it is fitted, the aperture E may be non-circular orpolygonal and the piece 0 circular or of any other convenient shape toform apertures d for the passage of the Water, or the apertures may beformed by perforations in the piece 0, adjacent to the projecting piece0, which may in that case be integral with the plate 0 or by grooves inthe outer surface of the piece 0. These and other modifications in thedetails of construction may be made without departing from theinvention.

It is to be understood that I do not herein claim a filter in which thewater is introduced into the filtering-chamber and is distributedtherein by means of projections extending into the body of the material,as that forms the subject-matter of my application, Serial No. 519,173,filed August 1, 1894.

In operation the filter is applied to a tap or faucet by means of theconical socket-piece G or by such other means as may be employed, andafter passing through the orifice D or other orifices, if more beemployed, traverses the filtrant I and passes through the perforatedplate J and out through the outlet M.

So far as the means of adjusting the plate J by means of the bottom Lare concerned, it is immaterial to my invention whether the distributing devices 0 and P are employed either in the exact construction shown orin any manner.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A filter having a filtering compartment containing the filteringmaterial, an adjustable perforated plate bearing upon the filteringmaterial and adapted to compress the same within the filteringcompartment, the bottom L adj ustably connected With the body of thefilter by screw threads Z and having the integral central hollow bearingboss N adapted to the perforated adjustable compressing plate, andprovided with aperture 91, leading to the outlet M.

2. A filter consisting of a closed case having a filtering compartmentprovided with one or more inlets for the water to be filtered, aprojecting piece extending into the body of the filtering material, theinlets to the filtering compartment leading the outer water to theoutside of the projecting piece so that it may travel down the surfacethereof, and one or more projections carried by the projecting piece andextending out into the body of the filtrant for carrying the water fromthe outer 1 surface of the projecting piece outward into E the body ofthe filtrant.

3. A filter consisting of a closed case having a filtering compartmentprovided with one or more inlets for the water to be filtered, aprojecting piece extending into the body of the filtering material, theinlets to the filtering compartment leading the outer water to theoutside of the projecting piece so that it may travel down the surfacethereof, and one or more projections carried by the projecting piece andextending out into the body of the filtrant for carrying the water fromthe outer surface of the projecting piece outward into the body of thefiltrant, and an adjustable perforated plate bearing upon the filteringmaterial and adapted to compress the same within the filteringcompartment and about the projecting piece.

In testimony of which invention I have hereunto set my hand.

HENRY DECK. Witnesses ERNEST HOWARD HUNTER, HELEN L. MOTHERWELL.

